The object in the im age is a Bandai Proplica Nichirin
Sword, a collectible replica based on the popular anim e
and m anga series Dem on Slayer: Kim etsu no Yaiba.
History of Nichirin Swords (In-Universe)
Origin Era: Nichirin Swords originated between the
Heian and Taisho eras in the Dem on Slayer
universe.
PPuurrppoossee: These swords are specifi-
cally created and used by the Dem on
Slayer Corps to effectively slay
dem ons, as the blades absorb sunlight,
which is lethal to dem ons.
Characteristics: The swords are known as “color-chang-
ing swords” because their blades change color depend-
ing on the wielder’s breath style and fitness for demon huntin